Bean thresher and cleaner.



PATENTED JUNE '7, 1904.

JLTRETHEWBY. BEAN THRESHER AND CLEANER.

APPLICATION FILED DEC. 31, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

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No. 762,212. I PATENTED JUNE '7, 1904.

. J. TRETHEWHY.

BEAN THRESHER AND CLEANER.

' APPLIUATION FILED DBO a1, 1903.

N0 MODEL. 2 SHEETS-SHEET 2- UNITED STATES Patented June '7, 1904.

PATENT OFFICE.

JAMES TRETHEWEY, OF STOCKTON, CALIFORNIA, ASSIGNOR OF ONE- HALF TO GEORGE H. HARRIS, OF STOCKTON, CALIFORNIA.

BEAN THRESHER AND CLEANER.

SPECIFICATION forming part of Letters Patent No. 762,212, dated June 7, 1904,

Application filed December 31, 1903. Serial No. 187,254i (No model.)

To all whom it may concern.-

Be it known that 1, JAMES TRETHEWEY, a citizen of the United States, residing at Stockton, in the county of San Joaquin and State of California, have invented new and useful Innprovements in Bean Threshers and Cleaners, of which the following is a specification.

My invention relates to an apparatus which is designed for threshing and cleaning various cereals; but it is particularlyapplicable to the threshing of beans, flax, and the like.

It consists in the combination of mechanism for feeding the material, delivering it successively to a plurality of threshing-cylinders running at different rates of speed, and thence transferring the separated beans or other material to cleaning-shoes in the main machine, at the same time discharging the straw and refuse, and finally in transferring the material from the preliminary cleaner to a supplemental one, on which the work is completed.

My invention also comprises details of construction, which will be more fully explained by reference to the accompanying drawings, in which Figure 1 is alongitudinal vertical section of my apparatus. Fig. 2 is an end view of the threshing-cylinder. Fig. 3 is a side view of same. Fig. 4-. is a plan view of the concave. Fig. 5 is an end view of same. Fig. 6 is a section taken on line 00 00 of Fig. 4:. Fig. 7 is a plan view of the screen-surface. Fig. 8 is a section on line 0 0 of Fig. 7. Fig. 9 is a section on line y y of Fig. 7. Fig. 10 is a plan of the belt. Fig. 11 is a section on line 2 .2 of Fig. 10.

It is the object of my invention to provide an apparatus for more perfectly threshing and cleaning beans and like articles and separating them from the vines or straw after having been'threshed.

The apparatus may either be stationary or a traveling one. In the present case I have shown it consisting of a main frame and casing, as at A, mounted upon wheels B and capable of being transported from place to place. The usual belt 2 carries the material to be threshed up to a point where it can be discharged into the machine. At this point it is der, to guide the material to be threshed between the cylinder and the concave.

Many substances like beans have a portion which is comparatively easy to thresh and another portion which is tougher and more difiicult. The first cylinder 7 serves to thresh out and separate that part which is most easy to separate. From the cylinder and concave 7 8 the vines or straw and the separated beans are carried by an open-slat belt 10 over a surface, as at 10, through which the separated beans fall. This surface consists of longitudinal bars and transverse uniting-ribs and the belt 10 moving over it. It serves to transfer the material from the first threshing mechanism to the second, which consists of a second threshing-cylinder 12 and its concave 13. In conjunction with the traveling carrier 10 is the belt 15, which serves to guide and direct the material passing over the belt 10 and deliver it to the cylinder 12 and between it and its concave 13. Power to drive these two cylinders 7 and 12 is derived from the main driving-shaft and is so transmitted that the cylinders may have a different rate of speed, so that the first cylinder will thresh out that portion which is the easiest separated from its straw and the second cylinder will complete the work upon the tougher and less easily separated material. From the cylinder and concave 12 13, the straw is received upon an endless traveling belt, as at 16, and transferred upwardly and rearwardly, the belt passing over a direction-drum, as at 17, which changes its direction to a more nearly horizontal one, and finally passing over the drum 18 near the rear end of the apparatus the straw or'vines will be discharged at this point- The beans or grain passing through the separator 10 fall upon an endless traveling belt, as at 19, which passes below both threshing-cylinders, and at 20 it passes over a drum, and it is then directed upwardly and at an angle, as shown, so that the separated beans or grain and such smaller chail and impurities as may be passed through the primary screens will be carried up and delivered upon the screens of the cleaning shoe or shoes, as at 21. These shoes contain the usual or any suitable screens, such as are employed upon various classes of graincleaning machinery, and the shoes are oscillated or shaken by any suitable shaking connection, such as a connecting rod or rods 22, extending from a crank-pin 23 to a connection at 24:, which operates to give the shoe an oscillating motion.

A suitable fan is disposed, as at 25, so as to produce a blast of air which passing through the screens will separate the major portion of the impurities from the beans or grain to be saved, and the latter are discharged into a screw-auger case, which extends transversely across the machine, and the revolution of the screw within the auger will deliver the grain into an elevator-spout, as at 26. The buckets of this elevator raise the grain and deliver it into a supplemental and final cleaner, as at 27. This cleaner has the usual shoe and screens and the fan, as at 28, by which a blast of air is discharged through the screens to complete the cleaning. From these screens the grain falls into another transverse auger-spout, and by the auger the grain is delivered into a chute, as at 29, which discharges it at a point suitable for sacking.

The concaves 8 and 13 of the threshing machinery are preferably constructed in sections, as at a. These sections are so disposed as to interlock and slip in longitudinally, each section comprising the bars and ribs which form the concaves, in relation to which the threshing-cylinders revolve. These sections can be easily removed or replaced independent of each other. In order to regulate the distance of the concaves from the cylinders, thesdconcaves are shown pivoted, as at 30, and by means of levers 31 and connections, as at 32, the concaves can be readily adjusted to suit the character of the material which is being operated upon.

The apparatus may be driven by any suitable motor, such as a gasolene-engine carried upon the apparatus.

Having thus described my invention, what I claim, and desire to secure by Letters Patent. is"

1. The combination in a threshing apparatus of a plurality of threshing-cylinders and concaves, a traveling conveyer interposed between said cylinders,having one end positioned to receive directly the material delivered from the first cylinder and having its opposite end positioned to deliver said material directly to the second cylinder, and means including a downwardly-traveling carrier for delivering the unthreshed material to the first-named cylinder.

2. The combination in a threshing apparatus ot' a plurality of threshing-cylinders and their concaves, a screen-surface extending between the concaves, a traveling belt passing over the screen and receiving the discharge of one concave and delivering the same to the inlet end of the second cylinder, and feeding means including a downwardly-traveling carrier for the first cylinder.

3. The combination in a threshing apparatus of two threshing-cylinders and their concaves, a screen-surface composed of longitudinal bars and transverse uniting-ribs, eX-' tending substantially from one cylinder and concave to the other, an endless traveling openslat belt extending over the screen-surface and adapted to deliver to the second cylinder and concave the material delivered from the first cylinder and concave, and feeding devices including a downwardly-traveling carrier for the first cylinder.

L. A threshing apparatus consisting of a pluralty of threshing-cylinders and their concaves located one behind the other, means includingadownwardly-operating belt for deliveringthe material to be threshed and directing it between the first cylinder and its concave, an endless traveling belt occupying the space between the cylinder and having one end communicating with the discharge from the first cylinder and the opposite end delivering the material directly to the second cylinder, said belt consisting of longitudinal and transverse members and a screen disposed between the first and second cylinders, said devices acting to separate the threshed beans from the unthreshed material and to deliver said unthreshed straw to the second cylinder and downwardly-operating means by which the straw is directed between the second cylinder and its concave.

5,. A threshing apparatus consisting of a pair of threshing-cylinders with their concaves disposed one behind the other, and having an endless traveling belt and screen located between the two, endless traveling belts for delivering unthreshed material between the first cylinder and its concave, a belt acting in con junction with an intermediate traveling belt to deliver the material to the second cylinder after it leaves the first, an endless traveling belt located below the cylinders and intermediate screen adapted to receive the separated beans, a cleaning-shoe into which said beans are delivered and an endless traveling belt upon which the straw from the last threshingcylinder is delivered and by which it is discharged.

6. A bean-threshin g apparatus consisting of a plurality of threshing-cylinders and their concaves located one behind the other, means for deliveringunthreshed material between the first cylinder and its concave, an endlesstraveling belt and screen-surface located between the first and second threshing mechanisms and acting in conjunction to transmit the material from the first to the second cylinder and its concave, an endless traveling belt located beneath the two cylinders and intermediate screen upon which belt the threshed grain is received and means for adjusting the concaves ,to regulate the distance between them and the cylinders.

7. In a bean-threshing apparatus,a plurality of threshing-cylinders and their concaves said concaves being pivotally mounted at one end, a'traveling belt and a screen composed of longitudinal bars and transverse uniting ribs extending from the pivoted end of one concave to the free end of the other concave, means for adjusting the concaves relative to the cylvinders, and a receiving-belt below the cylin ders and the intermediate belt and screen.

8. In a threshing-machine, the combination with a threshing-cylinder, of a concave therefor formed of longitudinally-removable sections with interlocking sides said sections including transverse curved ribs and longitudi nal uniting-bars.

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

JAMES TRE HEWEY. Witnesses:

S. H NOURSE, J ESSIE O, BRODIE. 

